Purpose Of A Roof Scoop

Hood scoops are for cooling the engine or engine components.

Purpose of a roof scoop.

Any dust floating around the cabin will seriously inpeed the driver s vision and make it much harder for the co d. The main reason for having a roof scoop on a rally car is to actually pressurise the interior of the car slightly. For rallying in those cars such as the wrc cars they perform a function but i don t know what. On a rally race car a small roof scoop creates positive pressure in the cabin pushing dust out of window.

To flush out the. The only other reasons for a roof scoop are to cool rear mounted heat exchangers radiators or to provide intake air for a rear or mid mounted engine. You ve probably noticed that if your car windows are open fresh air gets sucked in. Just a quick video on how i installed my roof scoop and vent on my 2004 subaru sti thanks for watching.

This small increase in pressure works wonders to keep out dust and sand from the rally stage. In almost every case a large naca duct will provide more than sufficient airflow without increasing drag raising the boundary air thickness or causing turbulent airflow. What are roof scoops for. Anyone has idea.

Deep 6 rally team merch and also random car sticker. If the car was a rear engined air cooled engine car like an old vw bug it could be used to force cooling air over the motor. For a normal street car it s just gives it look to make it look more aggressive. This is because there s a negative pressure created by the vacuum bubble behind the trunk.

So a car that has the engine in the front the purpose of the roof scoop is merely for looks. Also on mid engined cars the roof scoop is the air intake. Re read what i said its for the passenger area of the car. Getting back to aerodynamics today i explain how hood scoops and bonnet vents work for road and track.